Product Review

Features:
Cooling with wax, no need to add water when drilling.
Dry drilling granite & marble, concrete, tile/ceramic, etc.
Can be used with hand drill, bench drill.

Specifications:
Material: Nickel & Steel
Hole Diameter: 8mm (approx. 5/16in)
Drill Length: 32mm (1 1/4 in)
Total Length: 65mm (2 1/2 in)
Hex Shank Diameter: 10mm (3/8 in)
Hex Shank Shape: Triangle
Color: Golden

Note:
1. At first, drill slowly at an angle of 45 degree. When the gap appear then drill it in vertical position.
2. Shake the drill slightly when punching, which is convenient for removing waste chips and increasing speed.

Package included:
3 x 8mm Diamond Drill Bit